Guard for protecting couplings of well tubings



Nov. '19, 1929. w. P. SUTTON GUARD FOR PROTECTING COUPLINGS 0F WELL TUBINGS Fil ed Feb. 25. 1928 .M/ w W V f W a m. 8 2 y W 1-.-: HH HHHH :mm m m I 6 \A 7 1 J a Patented Nov. 19, 1929 UNITED STATES AT T OFFIC 53:. I

WILLIAM P. S'UTTON, OF SEMINOLE, OKLAHOMA, ASSIGNOR TO INDIAN TERRITORY ELUMINATING OIL COMPANY, OF BARTLESVILLE, OKLAHOMA, A CORPORATION OF NEW JERSEY GUARD FOR-PROTECTING COUPLINGS OF WEIIII TUBINGS V Application filed February 23, 1928. Serial No. 256,153.

This invention pertains to guards or protectors for the couplings of tubing or pump rods, such as used in deep wells, such as oil wells.

In the operation of such a deep well, the well tubes, pump rods and the like are subject to movement up and down within the casing. It has been found that there is excessive wear on the tubing collars or couplings due to continual friction caused by the tubing moving up and down against the easmg.

One of the objects of this invention, therefore, is to provide a guard which may be placed over the tube couplings to protect the same against wear.

Another object is to provide such a guard of soft wearing material, which will wear longer than the metal itself.

Another object is to provide such a guard, which may be easily applied and securely held in place. i

Another object is to provide such a guard which is cheap to construct and easy to renew.

Further objects will appear from the fol- -lowing description, taken in connection with the accompanying drawing, in which- Figure 1 shows a partial longitudinal sectiogll of a guard embodying this invention; an

Figure 2 is a section on line 22 of'Figure 1.

Referring to the drawing, 1 designates the tube, which is held together by the usual threaded coupling 2. Arranged to be placed over the coupling 2 is a guard 3. This may be constructed of rubber or similar wearing material. This guard is preferably constructed of 'a single piece split along one side, as shown in Figure 2, and arranged to be sprung over the tube andv coupling. It is provided with a reduced neck 4 at each end, adapted to receive a clamping strip 5, such as a hose clamp, which may be secured at its ends by any suitable fastening, such as a pin 6. l

- The guard 3 may be generally cylindrical iii-shape and may be provided at its middle portion with an enlarged chamber 7 adapted to receive the coupling 2, which it should fit snugly and interlock therewith to prevent endwise movement. As the tubes 1 are often constructed with an upset portion 8 at the joints, the interior bore of the guard 3 may have its end portions formed so as to fit this upset portion of the tube, as illustrated in Figure 1. The guard may then be clamped.

tightly to the tube 1 so that there will be no.

liability of its moving on the tube.

It will be seen that this invention provides a simple and economical device for protecting the couplings of the tubes where they rub against the casing 10. It has been found in practice that a rubber guard of this type is easily and quickly applied, and that it wears longer than a metal guard. Accordingly, not only is the tube protected, but the wear on the well casing is also reduced to a minimum. The rubber guard also res duces any tendency to abrasion or cutting at the points of contact with the casing, as would be the case with a metal guard. Consequently, not only is the wear of the casing reduced, but the friction involved in opera-'- tion of the pump is also reduced and the cost of operating decreased correspondingly. This guard can also be used to protect the couplings of pump rods with similaradvantages.

It is obvious that various changes may be made, within the scope of the appended claims, in the details of construction with out departing from the spirit of this invention;.it is to be understood, therefore, that this invention is not limited to the specific details shown and described.

Having thus described the invention, what is claimed is:

1. In well tubing composed of sections joined by couplings, a coupling protector,

comprising, a split sleeve adapted to be central cavity adapted to receive the coupling I and end portions adapted to engage the tube, .said sleeve being split to permit springing thesame over the coupling.

3. In well tubing composed of sections joined by'couplings, a coupling protector,- comprising, a split rubber sleeve having a central cavity adapted to receive 'the coupling and end portions adapted to engage the tube, said sleeve being split to permit springing the same over the coupling, and a clam for securing said sleeve in place.

4. In well tubing composed of sections joined by couplings, a con ling protector,,

, compris ng, asleeve of so wearing material having an enlarged internal cavity adapted to cover and interlock with the coupling and having end portions adaptedto I engage the tubing sections, and means for holding said sleeve in place.

.5. In well tubing composed of sections joined by couplings,va coupling protector, comprising, a sleeve of soft Wearing material having an enlarged internal cavity adapted to cover and vinterlock with .the coupling and havingend portions adapted to engage the tubing sections, and clamps encircling the ends of said sleeve adaptedto hold the same in place. I p

'6. In' well tubing composed of sections joined by couplings, a coupling protector, comprising, a split sleeve adapted to be s rung over the coupling and tubing sections, said sleeve having a central part adapted to cover the coupling and having end portions adapted to engage the tubing sectilons, and means for holding said sleeve in ace. p 7. In well tubing composed of sections 40 joined by couplings, a coupling protector, comprising, a split sleeve adapted to be sprung over the coupling and tubing sections, said sleeve having a central part adapted to cover the coupling and having end portions adapted to engage the tubing sections,v an'd'clamps encircling the ends of said sleeve adapted to hold the same in place. In testimon whereof I aflix my signature this 16 day of%ebruary, 1928.

to WILLIAM P. SUTTON. 

